The standard approach to memory rpotection on multi-programmed computer systems is that the operating system must rely on hardware-provided features implementes on a portion of cpu design called the MMU(memory management unit) The MMU effectively provides protection for program execution, especially because RAM, differently from CPU cores, does permit more than one process loaded at the same time. Explain how the memory-related protection mechanisms work. Make sure to include: - How processor modes impact MMU configuration; - Physical memory versus logical memory; - How the MMU works, including overall structure and the logic it performs; - The protection goals; what we want to protect and why; - Performance costs related to paging mechanism
The standard approach to memory rpotection on multi-programmed computer systems is that the
The MMU effectively provides protection for program execution, especially because RAM, differently from CPU cores, does permit more than one process loaded at the same time.
Explain how the memory-related protection mechanisms work.
Make sure to include:
- How processor modes impact MMU configuration;
- Physical memory versus logical memory;
- How the MMU works, including overall structure and the logic it performs;
- The protection goals; what we want to protect and why;
- Performance costs related to paging
- What happens when illegal access occur.
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